高频介电加热装置 - 功率输出测定试验方法

[中文适用范围]： 适用范围：本文件为最终草案国际标准（FDIS）的预发布版本，提前期最长为6周，在投票期（2026年6月5日至2026年7月17日）内供销售。IEC 61308:2026规定了测定用于工业加热及材料加工设备的高频有效功率输出量的试验方法，尤其适用于向用户提供的独立式高频发生器。 本文件原则上适用于频率范围为100 kHz至300 MHz的设备（定义见IEC 60519-1），但存在以下限制：不适用于感应加热（其可在上述频段低频部分实施）；不适用于以下用途的设备：家用电器及类似用途设备、商业用途设备、实验室用设备及医用高频设备。 对于在指定工业、科学和医疗（ISM）频段工作的设备，根据CISPR 11要求，其工作频率必须保持在ISM频段内；然而，负载介电参数的变化会导致电路谐振频率发生改变，因此一个工作周期内的平均输出功率可能显著低于测试条件下测得的数值。该值取决于调谐系统的响应特性。 注1：以下准则可用于判定设备是否属于工业设备： - 商用设备通常按系列化生产设计规划，旨在批量生产大量相同型号产品； - 工业设备通常以小批量或单件形式生产；加工后的产品通常在加热过程结束后即被消耗或可用于最终用途。 注2：当负载的介电参数随时间或温度显著变化时，实际负载下测得的输出功率可能与本文件规定的试验负载下测得的数值不同。 本文件适用于通常连续额定运行的设备。本第三版替代并废止了2005年发布的第一版。本版为技术修订版，相较于上一版主要进行了以下技术更新：a) 与IEC 60519-1和IEC 60519-6最新版本的原理进行协调与对齐；b) 更详细地描述了特别是介电塑料焊接器的量热负载试验及输出功率评估方法。 [外文原描述]： This Final Draft International Standard is an up to 6 weeks' pre-release of the official publication. It is available for sale during its voting period: 2026-06-05 to 2026-07-17. By purchasing this FDIS now, you will automatically receive, in addition, the Redline version of the final publication. IEC 61308:2026 specifies test methods for the determination of useful high frequency power output in equipment for industrial heating and processing of materials. It is in particular applicable to HF generators made available to users as separate units. This document is basically applicable to equipment operating in the frequency range 100 kHz to 300 MHz, as defined in IEC 60519-1, with the following limitations. This document does not apply to induction heating, which it is possible to carry out in the lower part of the specified frequency band. The ISM centre frequencies for dielectric heating and processing of industrial interest are narrow bands about 6,78 MHz, 13,56 MHz, 27,12 MHz and 40,68 MHz. This document is not applicable to: - appliances for household and similar use; - commercial use; - laboratory use; - medical high frequency equipment. For equipment working in designated ISM bands, it is a legal requirement that the frequency remains within the ISM bands according to CISPR 11, but the resonant frequency of the circuit varies with the change of dielectric parameters of the load. Therefore, the value of the mean output power in the work cycle can be much lower than the value obtained under the test conditions. This value depends upon the response of the tuning system. NOTE 1 The following criteria are suitable for determination of the classification as industrial equipment: – commercial equipment is typically designed and planned for series production of many identical units; – industrial equipment is typically produced in small series or even as single units; the processed goods are consumed or ready for final use at the end of the heating process. NOTE 2 Heating a workload with dielectric parameters which change significantly in time and/or with temperature, the value of the output power obtained with the actual charge can be different from that obtained with the test load specified in this document. This document relates to equipment normally operating under continuous rated conditions. This third edition cancels and replaces the second edition published in 2005. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) adaptation and alignment to the principles in more recent editions of IEC 60519-1 and IEC 60519-6; b) more detailed descriptions of, in particular, the calorimetric load test and output power evaluation for dielectic plastic welders.